When should I take my Melanoma patient to the emergency room

When to Seek Emergency Care for Melanoma

This is an important question. While melanoma itself typically doesn't require emergency room visits, certain complications or side effects from treatment can warrant urgent care. Let me explain when you should consider the ER.

Situations That May Require Emergency Care

Severe Allergic Reactions to Immunotherapy If your patient is receiving immunotherapy drugs like nivolumab or pembrolizumab (checkpoint inhibitors used to treat melanoma), severe allergic reactions can occur during or shortly after infusion. Signs include:

• Difficulty breathing or shortness of breath
• Severe swelling of face, lips, or throat
• Chest pain or pressure
• Severe dizziness or fainting

Severe Immune-Related Side Effects Immunotherapy can activate the immune system in ways that cause serious complications:

• Severe abdominal pain with vomiting (possible colitis/bowel inflammation)
• High fever (over 103°F) with confusion
• Severe headache with stiff neck (possible neurological involvement)
• Difficulty breathing or persistent cough

Bleeding or Infection

• Uncontrolled bleeding from a surgical site
• Signs of serious infection: fever over 101°F, severe chills, confusion, or rapid heartbeat
• Severe wound complications after surgery

Neurological Symptoms

• Sudden severe headache
• Confusion or difficulty speaking
• Weakness or numbness on one side of the body
• Seizures

Severe Pain or Swelling

• Sudden, severe pain not controlled by prescribed medications
• Significant swelling in limbs (especially after lymph node surgery, which can indicate lymphedema complications)

When to Call Your Oncologist Instead

Many melanoma-related concerns don't require the ER but do need prompt medical attention:

• Mild to moderate nausea or diarrhea
• Fatigue or mild fever (under 101°F)
• Mild skin reactions at injection sites
• Questions about medication side effects
• New or changing skin lesions (schedule urgent dermatology appointment)

Call your oncologist's office first if it's during business hours—they often have on-call nurses who can advise whether ER care is needed.

Key Principle

According to the NCCN Guidelines for Patients: Melanoma (2025), treatment decisions and management of complications should involve your care team. When in doubt about whether something is an emergency, it's better to call your oncologist or poison control (for medication questions) first, or go to the ER if you're experiencing severe symptoms like difficulty breathing, chest pain, severe allergic reactions, or signs of serious infection.

Your care team should provide you with emergency contact information and clear instructions about what symptoms warrant immediate attention based on your specific treatment plan.

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This information is for educational purposes only. Always consult your healthcare team for personalized medical advice and decisions.